Example for next four problems:

Compound formula: MgCl2

Element: Mg

# of Atoms: 1

Element: Cl

# of Atoms: 2

gram formula weight (g): 95.21

Compound Formula: HCI

Element H

# of Atoms: (Options are 1, 2, and 3)

Element: CI

# of Atoms: (Options are 1, 2, and 3)

gram formula weight (g): (Options are 36, 36.46, and 36.50)